Porsche doesn't use its "S" designation lightly. They first used the "S" badge in 1952 for a 356 model with a then larger 1.5-liter engine. Perhaps the most famous Porsche "S" arrived in 1967, the legendary 911S that spawned the performance revolution that took the company from a quirky specialty brand to the racing powerhouse that it is today. The Boxster S is the latest interpretation of the Boxster sports car, definitely the best in its class.